Combination post-drill and portable hand-drill.



0. A. osmomnsow. I COMBINATION POST DRILL AND PORTABLE HAND DRILL. APPLICATION FILED OCT. 24.1916.

1,242,929, Patented 0013.2,1917. H I II It 21 51' 1M z m I;

Q: Z5; B49 743 F 17 j Z 25 I Witnesses TED srarns PATENT or rm OSMOND A. osivronnsolv, or sArIN mnsasf To all whom it mag concern:

Be it known thatI, OSMOND A. OsMoND- SON, a citizen of the UnitedStates. residing at Salina, in the county ofSaline and State of Kansas, have invented a new and useful Combination Post-Drill and Portable Hand- Drill, of which the following is a specificati0n.-'":' v

r The device forming, the subject matter of this application is a drill actuating means, and the object of the invention is to provide astructure of this, kind which, taken as an entity, is adapted to be used as a vertical, post drill, itbeing p,o'ss'ible,,by disassociat ing certain parts of the structure, to use the device as a bench drill, and by making certainother adjustments, to use the structure as a hand drill. V f

4 It is within the province of thedisclosure to improve generally and to enhance the utility of-devicesof that type to which the present invention appertains.

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement ofpart-s and in the details of construction hereinafter described and .-claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed, with out departing fromthe spirit of theinv'ention. V

In the accompanying drawings Figure 1 shows inside elevation, a drill constructed'inaccordance with the present invention; I r

Fig. 2 is a front elevation of the drill; and

Fig. 3 is a fragmental longitudinal section showing the cooperation between certain parts of the structure. V q l In carrying out the present invention thereis provided a support 1.. The support 1 is a composite structure and includes a main or upper member 2 towhich is applied a-front strip 3'and a back strip 4. One or more securing elements 5 :unite the front strip 3 and the back'strip l with-the main member 2. The front strip 3 and the back strip e'project below the lower end of the mai'n'member 1 to "define a recess 6. The back strip 4 is extended aconsiderable distance below the lower end of the front strip 3' and is reduced in diameter, as indicated at Mite-form a depending arm 7 which is re:

Specification of Letters Patent.

Application filed October 24, 1916. Serial No. 127,466.

' commmmmosmam AND PORTABLE HAND-DRILL. ii

" Patented Oct. 2, 19171 duced in thickness to form, at the lower end ofthe arm, a finger 8. 1 The support 1 includes an auxiliary or lower member 9, the upper end 10 of which is received; in the recess -6 above described' Secured to the rear face of the auxiliary member 9 intermediate the upper and lower. ends thereof is a u-shaped'clip or clamp 11." The finger S extends within the contourof the clip 11, and securing devices 12, which may bebolts, unite. the clip 11, with ber 9.

From the foregoing it will be noted that the support 1 comprises separable-parts 1 and 9. By tightening up the'securing elements 5, the upper endrlO of the auxiliary member 9 may be bound in the recess 6fbetween thestrips 3 and 4, and by tightening up the securing devices 12, the :clip 11 may be-bound on the finger SJ The purposeto be accomplished by, separating the members 1- and 9 will be manifest when the descrip tionhas been further proceeded with. f

A two-part arm 14 stands at right angles to the 'main" member 20f the support .1 and the auxiliary mem is attached thereto as shown at 15. The arm 14 is sustained by;braces". 16, the upper ends of'which are attached as shown" at 17 to the arm, the, 'lower ends of the braces being united as indicated at 18 with the front stripB. Disposed between the constituent members-of the two-part arm 14 at the outer ends thereof is a bearing19 held in-place I meshing into a gear wheel 24: carried by a ,7

shaft 25 journaled in the bearing 19. As shown best in Fig. 3, the shaft 25 is equipped atits lowerend witha polygonal head 26. The head 26, and corresponding parts hereinafter described, may be of any desired contour but to avoid prolixity in description, it 'will-bedescribed as square. The square head 26 of the lower end of the shaft 25 is slidablyreceived within a square sleeve 27 equipped adjacent its upper :end with a flange 28 which, coacting with the head 26, limits the downward sliding inovement'o'f the sleeve 27i 1 7 Fixed to and "projecting from the aux? il a y m m r 9 Q th p t-la breaker 30, having bifurcations 31 at its outer end. Disposed below the bracket 30 and secured to the auxiliary member 9 of the support 1 is a bracket 32 which has bifurcations 33 at its outer end. The numeral 34 denotes a base bar received between the bifurcations 33 of the bracket 32, and between the bifurcations 31 of the bracket 30. The bar 34 has a rectangularly disposed upper arm 35 lying above the bracket 30. The arm 35 is secured as indicated at 36 to the base bar 34. Attached to the lower end of the base bar 34, as shown at 62 is a bearing 37. A set screw- 38 is threaded into one of the bifurcations 33 of the bracket 32 and engages the base bar 34 at one side. The construction, obviously, is such that the base bar 34 and parts carried thereby are detachably'supportcd by the brackets 30 and 32. A feed screw 39 is journaled in the bearing 37 and in the arm 35 but is held against longitudinal movement therein. screw 39 is manipulated by a hand wheel 40. The numeral 41 designates a work table mounted as shown at 42 to slide'on the base bar 34 for adjustment. The feed screw 39 is threaded into the work table 41 and constitutes a means whereby the work table may be raised and lowered.

The arm 35which is connected to the base bar 34 carries a lower bearing 43. The bearing 43 carries, asshown in Fig. 2, a laterally ofl'set U-shaped bracket 44 to the upper end of which is connected a bearing 45 alined vertically with the bearing 43. Disposed between the bearings 43'and 45 is a beveled pinion 46. Threaded into the bearing 43 is a sleeve 47 provided at its lower end with a hand wheel 48. A shaft 49 slides verti cally in the bearing 45 and in the sleeve 47 and rotates in these elements. The shaft 49 slides longitudinally in the bevel pinion 46, but is splined thereto as shown at 50, so that when the pinion 46 is rotated, the shaft 49 will be rotated also. The lower end of the shaft 49 carries a chuck '51 adapted to receive a boring tool (not shown) whereby the work supported on the table 41 may be pierced. The chuck 51 has a shoulder 52 adapted to be engaged by the lower end of the threaded sleeve 47, so as to crowd the chuck 51 and the tool carried thereby downwardly onto the work which is supported on the table 41. .The upper end of the shaft 49 is provided with a square head 53 slid-.

ably received in the square sleeve 27. It will now be obvious that the sleeve 27 constitutes a means whereby, when the shaft 25 is rotated, rotation will be imparted to the shaft 49 and'to the tool in the chuck 51. The upper end of the shaft 49 carries a reduced threaded stem 54 lying within the contour of the sleeve 27. A bar 55 is secured to the arm 35 and projects downi Wardly therefrom, the bar 55 having an The feed outwardly projecting stop 56, cotiperatlng with the hand wheel 48 of the sleeve 47, for a purpose which will be setforth here1nafter.

Disposed within the contour of the bracket or yoke 44 is a beveled p1n1on 57 which meshes into the beveled pinion 46. The shaft 58 of the pinion 57 is journaled in the outer side of'the bracket or yoke 44, and carries a threaded tip 59 of the same diameter as the stem or tip 54 at the upper end of the shaft 49. A crank 60 is mounted on the tip 59 and, under the circumstance to be described hereinafter, may be mounted on the tip 54 at th upper end of the shaft 49. v

Let it be supposed that,as shown in Figs. 1 and 2, the structure is set up for use as a post drill. Then the crank 60 is operated, rotation is imparted to the beveled pinion 57, the pinion 57 driving the beveled pinion 46, and the pinion 46 rotating the drill shaft 49 (Fig. 3), because the pinion 46 is splined to the drill shaft as shown at 50. Rotation will be imparted 'to the square sleeve 27 by the square head 53 on the upper end of the shaft 49, and from the sleeve27, rotation will be imparted to the'shaft25 by the square head 26 of thelower end of the shaft 25. Vhen the shaft 25 isrotated, the gear wheel 44 will drive the pinion'23, and the fly wheel 22 will be rotated, for an obvious purpose. 4 q r r The threaded sleeve 47 may be fed clownwardly, within the bearing 43 by rotating the hand wheel 48, the lower'end of the sleeve 47 cotiperating with the shoulder 52 on the chuck 51 to feed the shaft 49 downwardly with respect to the work on the table 41. The shaft 49 may slide in the beveled pinion 46 during this operation, since these parts are splined together as shown at 50. F urther, the shaft 49 can move downwardly with respectto the sleeve27, without breaking the operative driving connection between the parts mentioned, because the squared head 53 at the upper end of the shaft 49 is slidably received in the sleeve 27.

lVhen the threaded sleeve 47 is moved downwardly by the hand wheel 48, the hand wheel 48 ultimately engages the stop 56 on the bar 55. Bythis operation, the squared head 53 on the upper endofthe shaft 49 is prevented from binding upon the upper endof the bearing 45. It is impossible, therefore, to lock the shaft 49 against rotation, by manipulating the hand wheel 48, the consequence of such a locking being the breaking of driving or driven parts, as a skilled mechanic will understand readily.

Let it be supposed that it is desired to use a portion of'the structure as-a bench drill. Then. the clip or clamp 11 is loosened. and the securing elements 5 are loosened, if necessary The auxiliary member 9 of the support 1 may then be detached from the main member 2 of the support, the squared head 53 of the shaft 49 sliding out of the sleeve 27. The auxiliary member 9 of the support may then be set up horizontally on a bench. Under the circumstances above described, the crank 60 is detached from the threaded tip 59 of the shaft 58 on the pinion 57, and is mounted on the threaded tip 54: of the shaft 49, so that the latter can be rotated from its rear end.

Let it be supposed, further, that it is desired to use the structure as a hand drill. Then, by loosening the set screw 38, the base bar 34.- and parts carried thereby may be detached from the brackets 30 and 32 and from the auxiliary member 9 of the support 1.

From the foregoing it will be understood that there is disclosed in this application, a novel structure which, when completely assembled, constitutes a post drill, operating vertically, it being possible to take down the device partly and use the structure as a hori- Zontally operating bench drill. Further, by removing the base bar 3 f from the brackets 30 and 32, as hereinbefore set forth, the structure may be used as a hand drill.

For convenience in claiming the invention, the fly Wheel 22, the pinion 23, the gear \vheel 24L and the shaft 25 may be described briefly as an inertia driving mechanism.

Having thus described the invention, What is claimed is 1. In a device of the class described, a support comprising separable main and auxiliary parts; means for holding the parts of the support together detachably; an inertia drive mechanism carried by the main part of the support and including a shaft;

a drill shaft mounted to rotate and to slide endwise on the auxiliary member of the support; means carried by the auxiliary member of the support for feeding the drill shaft endwise; means carried by the auxiliary member of the support for rotating the drill shaft; and a slidable connection uniting the shafts detachably for simultaneous rotation.

2. In a device of the class described, a

feeding the drill shaft endWise; bar sup-v ported means for rotating the drill shaft;

and a slidable connection uniting the shafts for simultaneous rotation.

3. I11 a device of the class described, a support including separable main and auxiliary parts; means for releasably uniting the parts of the support; an inertia drive mechanism carried by the main part of the support and including a shaft; a drill shaft mounted to rotate and to slide endWise in the auxiliary part of the support; means mounted on the auxiliary part of the support for feeding the drill shaft endWise; a beveled pinion journaled on the auxiliary part of the support, the drill shaft being splined to the beveled pinion; a third shaft journaled in the auxiliary part of the support; a beveled pinion carried by the third shaft and meshing into the first specified beveled pinion; a sliding sleeve connecting the drive shaft and the first specified shaft for simultaneous rotation; and an operating member mounted on the third shaft, the third shaftand the sleeve received end of the drill shaft being provided With duplicate elements coacting With the operating member, whereby the operating member may be shifted to the end of the drill shaft When the sleeve is retracted and When the main and auxiliary parts ofthe support are dis connected.

4:. In a device of the class described; a support comprising separable main and auxiliary parts; means for releasably uniting the parts of the support; an inertia drive mechanism carried by the main part of the support and including a shaft; a bearing structure constituting a portion of the auxiliary part of the support; a drill shaft mounted to rotate and to slide in the hearing structure; means carried by the auxiliary part of the support for rotating the drill shaft; a sleeve having threaded connection With the bearing structure and coacting with the drill shaft to advance the drill shaft; polygonal heads carried by the first specified shaft and by the drill shaft; a sleeve slidably coacting With the said heads to connect the drill shaft and the first specified shaft for simultaneous rotation; and a stop carried by the auxiliary part of the support and coacting With the threaded sleeve'to limit the advancing movement of the sleeve and the drill shaft, thereby to prevent the head on the drill shaft from v Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Batents,

Washington, D. G, i 

